Adularia
Definition
A structural variety of orthoclase (potassium feldspar) presenting as transparent to translucent, colorless or whitish crystals, characterized by a specific silvery or opalescent schiller known as adularism. Named after the Adula Alps in Switzerland, where it was historically found within hydrothermal veins of metamorphic rocks. Due to its unique optical properties, fine specimens are cut as moonstones for gemology, while bulk materials are applied in high-grade ceramics and glass manufacturing.
Bilingual Equivalents
- Adularia
- Adular
Grammatical & Source Details
| Inflection Type | Neuter singular noun, fixed within specialized geological nomenclature. |
| Formation | Toponymic derivation from the Swiss Adula Alps linked with the standard mineral suffix architecture. |
| Spelling / Pronunciation | [ˈædjʊˌlɛər] (phonetic notation highlighting its classification as adularia) |
| Source | Mindat Mineralogical Database & International Mineralogical Association Indexes |
Contextual Usage Examples
RO: Geologul a identificat un eșantion remarcabil de adular în crăpăturile interioare ale rocii granitice.
EN: The geologist identified a remarkable adular specimen within the interior crevices of the granitic rock.
RO: Proprietatea de adularizare face ca acest mineral numit adular să reflecte o lumină albăstruie unică sub razele directe.
EN: The adularescence property causes this mineral named adular to reflect a unique bluish light under direct rays.
RO: În laboratoarele industriale, pulberea de adular este adăugată în amestecurile vitroase pentru a spori rezistența termică.
EN: In industrial laboratories, adular powder is added to vitreous mixtures to enhance thermal resistance.
Idioms & Phrases
Cristal de adular / Adularia crystal
RO: Formă geometrică monoclinică perfect definită pe care o adoptă acest silicat în timpul răcirii lente a magmei.
EN: A perfectly defined monoclinic geometric shape adopted by this silicate during the slow cooling of magma.
Adular de tip piatra lunii / Moonstone-type adularia
RO: Varietate superioară gemologică ce prezintă un luciu sticlos și un joc de lumini perlat pe suprafața sa șlefuită.
EN: A superior gemological variety exhibiting a vitreous luster and a pearly play of lights across its polished surface.
Masivul Adula / Adula Massif
RO: Regiunea muntoasă europeană care constituie localitatea tip unde mineralul a fost documentat științific pentru prima dată.
EN: The European mountainous region constituting the type locality where the mineral was scientifically documented for the first time.
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